<template>
<div>
  <!-- 面包屑导航区 -->
  <el-breadcrumb separator="/">
    <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
    <el-breadcrumb-item>商品管理</el-breadcrumb-item>
    <el-breadcrumb-item>添加商品</el-breadcrumb-item>
  </el-breadcrumb>
  <!-- 卡片区域 -->
  <el-card>
    <el-alert title="添加商品信息" center :closable="false" show-icon type="info"></el-alert>
    <!-- 步骤条区域 -->
    <el-steps align-center :space="200" :active="activeIndex-0" finish-status="success">
      <el-step title="基本信息"></el-step>
      <el-step title="商品参数"></el-step>
      <el-step title="商品属性"></el-step>
      <el-step title="商品图片"></el-step>
      <el-step title="商品内容"></el-step>
      <el-step title="完成"></el-step>
    </el-steps>
    <!-- 侧边栏 -->
    <el-form :model="addForm" label-position="top" :rules="addFormRules" ref="addFormRef" label-width="100px">
      <el-tabs @tab-click="tabClicked" :before-leave="begoreTabLeave" :tab-position="'left'" v-model="activeIndex" >
        <el-tab-pane label="基本信息" name="0">
          <el-form-item label="商品名称" prop="goods_name">
            <el-input v-model="addForm.goods_name"></el-input>
          </el-form-item>
           <el-form-item label="商品价格" prop="goods_price">
            <el-input type="number" v-model="addForm.goods_price"></el-input>
          </el-form-item>
           <el-form-item label="商品重量" prop="goods_weight">
            <el-input type="number" v-model="addForm.goods_weight"></el-input>
          </el-form-item>
           <el-form-item label="商品数量" prop="goods_number">
            <el-input type="number" v-model="addForm.goods_number"></el-input>
          </el-form-item>
          <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
              v-model="addForm.goods_cat"
              :options="catelist"
              :props="{ expandTrigger: 'hover' ,...cateProps}"
              @change="handleChange"></el-cascader>
          </el-form-item>
        </el-tab-pane>
        <el-tab-pane label="商品参数" name="1">
          <!-- 渲染表单的item项 -->
          <el-form-item :label="item.attr_name" v-for="item in manyTableDate" :key="item.attr_id"> 
            <!-- 复选框组 -->
             <el-checkbox-group v-model="item.attr_vals">
              <el-checkbox border :label="item" v-for="(item,i) in item.attr_vals" :key="i"></el-checkbox>
            </el-checkbox-group>
          </el-form-item>
        </el-tab-pane>
        <el-tab-pane label="商品属性" name="2">
          <el-form-item :label="item.attr_name" v-for="item in onlyTableDate" :key="item.attr_id">
            <el-input v-model="item.attr_vals"></el-input>
          </el-form-item>
        </el-tab-pane>
        <el-tab-pane label="商品图片" name="3">
          <!-- action表示要上传的api地址 -->
          <el-upload
            :headers="headerobj"
            action="http://127.0.0.1:8888/api/private/v1/upload"
            :on-preview="handlePreview"
            :on-remove="handleRemove"
            :on-success="handleSuccess"
            list-type="picture">
            <el-button size="small" type="primary">点击上传</el-button>
          </el-upload>
        </el-tab-pane>
        <el-tab-pane label="商品内容" name="4">
          <quill-editor v-model="addForm.goods_introduce"> 
          </quill-editor>
          <el-button type="primary" class="btnAdd" @click="add">添加商品</el-button>
        </el-tab-pane>
      </el-tabs>
    </el-form>
  </el-card>
  <!-- 图片预览对话 -->
  <el-dialog
  title="图片预览"
  :visible.sync="previewVisible"
  width="50%"
  @close="previewClose">
   <img :src="previewPath" alt="" class="previewImg">
</el-dialog>
</div>
</template>

<script>
import _ from 'lodash'
export default {
  data() {
    return {
      activeIndex: '0',
      addForm: {
        goods_name:'',
        goods_price:0,
        goods_weight:0,
        goods_number:0,
        // 商品所属的分类数组
        goods_cat:[],
        // 图书的数组
        pics:[],
        // 商品详情描述
        goods_introduce:'',
        attrs:[]
      },
      addFormRules: {
        goods_name:[
          { required: true, message: '请输入商品名称', trigger: 'blur' },
        ],
        goods_price:[
          { required: true, message: '请输入商品价格', trigger: 'blur' },
        ],
        goods_weight:[
          { required: true, message: '请输入商品重量', trigger: 'blur' },
        ],
         goods_number:[
          { required: true, message: '请输入商品数量', trigger: 'blur' },
        ],
         goods_cat:[
          { required: true, message: '请选择商品分类', trigger: 'blur' },
        ]
      },
      catelist:[],
      cateProps:{
        label:'cat_name',
        value:'cat_id'
      },
      // 动态参数数组
      manyTableDate:[],
      // 静态参数数组
      onlyTableDate:[],
      // upload的header绑定对象，
      headerobj:{
        Authorization:window.sessionStorage.getItem('token')
      },
      previewPath:'',
      previewVisible:false

    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList(){
      const {data:res} = await this.$http.get('categories')
      if(res.meta.status!==200)
      return this.$message.error('获取数据失败')
      this.catelist = res.data
      // console.log(this.catelist)
      
    },
    // 变化触发的函数
    handleChange(){

    },
    begoreTabLeave(activeName,oldActiveName){
      // console.log(activeName,oldActiveName)
    },
    // 标签选中方法
    async tabClicked(){
      // 动态参数面板
      if(this.activeIndex==='1'){
        const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes`,{
         params:{sel:'many'} 
        })
        if(res.meta.status!==200)
        return this.$message.error('获取动态参数失败')
         res.data.forEach(item=>{
        item.attr_vals = item.attr_vals.split(' ')[0]==''?[]:item.attr_vals.split(' ')
      })
        this.manyTableDate=res.data
        console.log(this.manyTableDate)
      }else if(this.activeIndex==='2'){
         const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes`,{
         params:{sel:'only'} 
        })
        if(res.meta.status!==200)
        return this.$message.error('获取静态参数失败')
        this.onlyTableDate=res.data
        // console.log(this.onlyTableDate)
      }

    },
    // 处理图片预览效果
    handlePreview(file){
      this.previewPath = file.response.data.url
      this.previewVisible = true
    },
    // 处理移除图片的操作
    handleRemove(file){
      const filePath = file.response.data.tem_path

      const i = this.addForm.pics.findIndex(x=>{
        x.pic === filePath
      })

      this.addForm.pics.splice(i,1)

      console.log(this.addForm.pics)
    },
    // 图片上传成功的钩子函数
    handleSuccess(response){
      const picInfo = { pic:response.data.tem_path}
      this.addForm.pics.push(picInfo)
      console.log(this.addForm.pics)
    },
    previewClose(){
      this.previewPath=''
    },
    // 添加商品函数
    add(){
      this.$refs.addFormRef.validate(async valid=>{
        if(!valid){
          return this.$message.error('请填写必要的信息')
        }
        // 具体的业务逻辑
        
        // 处理动态参数
        this.manyTableDate.forEach(item=>{
          const newInfo = {attr_id:item.attr_id,attr_value:item.attr_vals.join(' ')}
          this.addForm.attrs.push(newInfo)
      })
        // 处理静态属性
        this.onlyTableDate.forEach(item=>{
          const newInfo = {attr_id:item.attr_id,attr_value:item.attr_vals}
          this.addForm.attrs.push(newInfo)
        })
        const form = _.cloneDeep(this.addForm)
        form.goods_cat = form.goods_cat.join(',')
        console.log(form)

        const {data:res} = await this.$http.post('goods',form)
        console.log(res.meta)
        if(res.meta.status!==201){
          return this.$message.error('添加商品失败')
        }
        this.$message.success('添加商品成功')
        this.$router.push('/goods')
      })
    }

  },
  computed:{
    cateId(){
      return this.addForm.goods_cat[2]
    }
  }
}
</script>

<style lang="less" scoped>
.el-steps {
  margin: 20px 0px;
}
.el-checkbox{
  margin: 0 10px 0 0;
}
.previewImg{
  width: 100%;
}
.btnAdd{
  margin-top: 15px;
}
</style>
